24 TROUBLESHOOTING
ENGLISH
BWhen engine suddenly stops
BWhen color of exhaust is especially bad
BWhen engine must be stopped immediately
BWhen engine overheats
Cause Countermeasures
Lack of fuel
*
*
Check the fuel tank and refill the fuel,
if necessary.
Also check the fuel system for air or
leaks.
Bad nozzle
* If necessary, replace with a new
nozzle.
Moving parts are
overheated due to
shortage of
lubrication oil or
improper
lubrication.
*
*
*
Check amount of engine oil with oil
level gauge.
Check lubricating oil system.
At every 2 times of oil change, oil filter
cartridge should be replaced.
Cause Countermeasures
Fuel is of
extremely poor
quality.
*
Select good quality fuel.
Use No. 2-D diesel fuel only.
Nozzle is bad.
* If necessary, replace with new
nozzle.
Cause Countermeasures
Color of exhaust
suddenly turns
dark.
*
Check the fuel injection system,
especially the fuel injection nozzle.
Bearing parts are
overheated.
* Check the lubricating system.
Oil lamp lights up
during operation.
*
*
*
*
Check the lubricating system.
Check the function of the relieve
valve in the lubricating system.
Check pressure switch.
Check filter base gasket.
Cause Countermeasures
Engine oil
insufficient
* Check oil level. Replenish oil as
required.
Fan belt broken or
elongated
* Change belt or adjust belt tension.
Coolant insufficient * Replenish coolant.
Excessive
concentration of
antifreeze
*
Add water only or change to coolant
with the specified mixing ratio.
Radiator net or
radiator fin clogged
with dust
* Clean net or fin carefully.
Inside of radiator
or coolant flow
route corroded
* Clean or replace radiator and parts.
Fan or radiator or
radiator cap
defective
* Replace defective parts.
Thermostat
defective
* Check thermostat and replace if
necessary.
Temperature
gauge or sensor
defective
*
Check temperature with thermometer
and replace if necessary.
Overload running * Reduce load.
Head gasket
defective or water
leakage
* Replace parts.
Unsuitable fuel
used
* Use the specified fuel.
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